MC908AZ32ACFU Freescale Semiconductor, MC908AZ32ACFU Datasheet - Page 111

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MC908AZ32ACFU

Manufacturer Part Number
MC908AZ32ACFU
Description
IC MCU 32K FLASH 8.4MHZ 64-QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC908AZ32ACFU

Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
40
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 15x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Chapter 10
Configuration Register (CONFIG-2)
10.1 Introduction
This section describes the configuration register (CONFIG-2). This register contains bits that configure
these options:
10.2 Functional Description
The configuration register is a write-once register. Out of reset, the configuration register will read the
default. Once the register is written, further writes will have no effect until a reset occurs.
EEDIVCLK — EEPROM Timebase Divider Clock select bit
EEMONSEC — EEPROM Read Protection in Monitor Mode Bit
AZ32A — Device indicator
Freescale Semiconductor
This bit selects the reference clock source for the EEPROM-1 and EEPROM-2 timebase divider
modules.
When EEMONSEC is set the entire EEPROM array cannot be accessed in monitor mode unless a
valid security code is entered.
This read-only bit is used to indicate that the MC68HC908AZ32A is an ‘A’ suffix version HC08 rather
than a non-’A’.
1 = EExDIV clock input is driven by internal bus clock
0 = EExDIV clock input is driven by CGMXCLK
1 = EEPROM read protection in monitor mode enabled
0 = EEPROM read protection in monitor mode disabled
1 = ‘A’ version
0 = Non-’A’ version
EEPROM Reference Clock Source
EEPROM Read Protection
Address:
Reset:
Read:
Write:
$FE09
EEDIV
Bit 7
CLK
R
0
Figure 10-1. Configuration Register (CONFIG-2)
= Reserved
R
6
0
MC68HC908AZ32A Data Sheet, Rev. 2
R
5
0
EEMON-
SEC
4
1
AZ32A
R
3
1
R
2
0
R
1
0
Bit 0
R
0
111

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